/*
 * Copyright 2017-2018 Allegro.pl
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { Datum } from "plywood";
import { Unary } from "../../../../common/utils/functional/functional";
import { SPLIT } from "../../../config/constants";
import { selectSplitDataset, selectSplitDatums } from "../selectors/selectors";

export function mapSplitDatums(datum: Datum, fn: Unary<Datum[], Datum[]>): Datum {
  const datums = selectSplitDatums(datum);
  return {
    ...datum,
    [SPLIT]: selectSplitDataset(datum).changeData(fn(datums))
  };
}
